手把輸入旋轉運動於連桿，使桿子轉動。桿子的尾端連接著另一個桿子，做上下移動。不能讓桿子的中心點左右移動，才能做往復運動。 The handle inputs rotation upon the link rotated. If the end of the link which does vertical translation is connect with the other links. It cannot allow the link to translate on the horizontal direction, thus enabling the link to do reciprocating motion.
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The handle inputs rotation upon the link rotated. If the end of the link which does vertical translation is connect with the other links. It cannot allow the link to translate on the horizontal direction, thus enabling the link to do reciprocating motion.